Ammonia-pipe coupling.



No. 644,!67. Patented Feb. 27, |900.

C. E. FRINK &. M. MURPHY. n

AMMONIA PIPE CDUPLING.

(No Modem (Application filed Oct. 14, 1899.)

Wfm5 lWETLLRiy #im Wd Nrrnn STATES PATENT eine.

. CHARLES E. FRINK AND MORRIS MURPHY, OF CHICAGO, ILLINOIS.

AMMONIA-PIPE COUPLING.

SPECIFIGATION refining part of Lettere Patent No. 644,167, dated'February' 27, 190e.

Application led October v14,A 1899. Serial No. 733,580. (No model.)

To all whom, it may concern:

Be it known that we, CHARLES E, FRINK and MORRIS MURPHY, citizens of theUnited States, residing at Chicago, in the county of Cook and State ofIllinois, have inventedcertain new and useful Improvements inAmmonia-Pipe Couplings, of which the following is a specication.

Our invention relates to a joint or coupling adapted for use in joiningor connecting the ends of pipes containing ammonia or other thin gas.

The object of our invention is to provide a simple, practical, and cheapjoint or coupling which shall be especially effective inpreventing theescape of the" ammonia or light gas from the pipes.

To the attainment of the foregoing and other desired ends our inventionconsists in matters hereinafter set forth.

In the accompanying drawings, Figure 1 is a view, partly in section andpartly in side elevation, of portions of a couple of pipes and a jointor coupling connecting the same and embodying our invention, the jointbeing in condition for use. Fig. 2 is a similar view showing'the jointarrangement upon the ends of the pipes, but not drawn up into conditionfor use. Fig. 3 is a-vertical section taken on line 3 3 in Fig. l. v

In the embodiment of our invention which we have shown in the drawings asleeve A, made of soft metal, preferably lead, is arranged over themeeting ends of the pipes B B. The opposite end portions of the sleeve Aare oppositely inclined or beveled, so as to give the sleeve a generaldo uble-cone-shaped form. Outside of the soft-metal sleeve A arearranged a couple of collars C C, whose adjacent portions are inclinedor beveled in substantial correspondence with the inclination of the endportions of the sleeve A. The in ner ends of the collars C C areprovided with flanges c c, through which bolts D D are eX- tended.

As a preferred arrangement and also as a matter of further and specificimprovement a sleeve or collar E, made of iron or similar material, isarranged immediately about the pipe ends and the soft-metal sleeve splitinto two longitudinal portions and abutted against and over the ends ofthis collar E. In this way pressure can be brought directly to check theoutflow of the gas, for this will tend to iiow out the ends of thecollar E, where great pressure can be brought. In case the collar E wereomitted it-is obvious that pressure cannot be brought immediately uponthe ends of the pipes, for the clamping-collars are slightly separatedat that point.

In preparing the joint the collar E and the portion of the soft-metalsleeve A are arranged over the pipe ends, and the collars C C are placedloosely in position over the sleeve A and the bolts D D extendingthrough the iianges thereof, as shown in Fig. 2. The nuts of the bolts DD are then tightened by a wrench, so as to draw the collars C C closelytogether, as shown in Fig. l. In drawing the collars C C together theportions of the softmetal sleeve are firmly and tightly compressedagainst the end portion of the collar E and also against the pipes andthe interiors of the clamping-collars, so as to make a tight andpermanent joint, which acts to absolutely prevent the escape of ammoniaor other gas from within the pipes. It will be seen that this joint ischeap and practical and involves but very few parts, which can be easilyand cheaply constructed; also, that it can be Vquickly and easily puttogether and taken apart, and, further, that it avoids the neces'- sityof having to cut threads either upon the pipes or collars surroundingthem.

What we claim as our invention isl. In a pipe-coupling, the combinationot' a metal collar adapted to lit over and cover the meeting line of thepipes and to extend on both sides of such line; a transversely-dividedsoft-metal sleeve, each of whose two portions or sections fits over andincloses one of the opposite end portions of the collar and the adjacentportions of the pipe, the outer surfaces of said portions or sectionsbeing tapered away from the meeting line of the pipes; a couple ofcollars adapted to fit over the portions or sections of the soft-metalsleeve, and made with their interiors internally tapered in substantialcorrespondence with such portions or sections, said collars beingextended toward one another so that their ilaring ends substantiallymeet, and the two portions or sections of the soft-metal sleevepractically filling and being substantially all ICO confined within saidcollars, and bolts for drawing such collars toward one another, each ofsaid bolts being extended between and engaging flanges formed on saidcollars, whereby the adjustment of one set of bolts tightens bothcollars.

2. In a pipe-coupling, the combination of a soft-metal tubular structureadapted to fit over and inclose the ends of the pipes, and made with itsopposite end portions tapering away from the meeting line of the pipes;a couple of collars inclosing the tapered end portions of such tubularstructure and tapered correspondingly therewith, said softmetalstructure being extended to the opposite sides of the meeting line ofthe pipes to such an extent, and the inclination of the same and thecollars being such, that a longitudinal movement of the collars willcompress the soft-metal structure inwardly, and also longitudinallyalong the pipes in a direction toward the meeting line thereof, and saidcollars being suficiently large and strong to enable them to alonewithstand the strain incident to such compression, and being extendedtoward one another so that their flaring ends substantially meet, andthe softmetal structure substantially filling and be ing practically allconfined within said collars; and bolts for drawing said collars t0-gether, each of said bolts being extended between and engaging flangesformed on said collars, whereby the adjustment of one set of bolts willtighten both collars.

Signed by us at Chicago, Illinois, this 10th day of October, 1899.

CHARLES E. FRINK. MORRIS MURPHY.

Witnesses:

A. MILLER BELFIELD, L. M. BULKLEY.

